import router from "./router";
import store from "./store";
import { Message } from "element-ui";
import NProgress from "nprogress"; // progress bar
import "nprogress/nprogress.css"; // progress bar style
import { getToken } from "@/utils/auth"; // get token from cookie
import getPageTitle from "@/utils/get-page-title";

NProgress.configure({ showSpinner: false }); // NProgress Configuration

const whiteList = ["/login", "/auth-redirect", "/403"]; // no redirect whitelist

router.beforeEach(async(to, from, next) => {
    // start progress bar
    NProgress.start();

    // set page title
    document.title = getPageTitle(to.meta.title);

    // determine whether the user has logged in
    const hasToken = getToken();

    if (hasToken) {
        if (to.path === "/login") {
            // if is logged in, redirect to the home page
            next({ path: "/" });
            NProgress.done();
        } else {
            // determine whether the user has obtained his permission roles through getInfo
            const hasRoles = store.getters.roles && store.getters.roles.length > 0;

            //const hasRoutes = store.getters.router
            if (hasRoles) {
                next();
            } else {
                try {
                    // get user info
                    // note: roles must be a object array! such as: ['admin'] or ,['developer','editor']

                    const { roles } = await store.dispatch("user/getInfo");
                    // generate accessible routes map based on roles
                    const asyncRoutes = await store.dispatch("permission/generateRoutes");
                    //console.log("accessRoutes", accessRoutes)
                    // dynamically add accessible routes
                    if (asyncRoutes.length == 0) {

                        router.addRoutes(asyncRoutes);
                        next(`/403`);
                        NProgress.done();
                    } else {

                        //router.addRoutes(asyncRoutes); //基础模板不用动态加菜单
                        // hack method to ensure that addRoutes is complete
                        // set the replace: true, so the navigation will not leave a history record
                        next({...to, replace: true });
                    }
                } catch (error) {
                    // remove token and go to login page to re-login
                    await store.dispatch("user/resetToken");
                    Message.error(error || "Has Error");
                    next(`/login`);
                    NProgress.done();
                }
            }
        }
    } else {
        /* has no token*/

        if (whiteList.indexOf(to.path) !== -1) {
            // in the free login whitelist, go directly
            next();
        } else {
            // other pages that do not have permission to access are redirected to the login page.
            next(`/login`);
            NProgress.done();
        }
    }
});

router.afterEach(() => {
    // finish progress bar
    NProgress.done();
});